(Apologies for cross-posting) Extended Semantic Web Conference (ESWC) is a key academic conference for research results and new developments in the area of the Semantic Web and Knowledge Graphs. ESWC 2024 marks the 21st edition, which will take place from May 26 – 30, 2024, in Heraklion, Greece. ESWC 2024 includes a special track about “Large Language Models for Knowledge Engineering” with a deadlines’ schedule as in the following. Furthermore, it features Posters and Demo sessions which will take place May 26-27, 2024. Call for Posters and Demos The Posters and Demos Track of ESWC 2024 provides a forum for late-breaking results, on-going research projects, and innovative ideas, as well as prototypes of semantic technologies and their applications in various domains. Submissions to the Posters and Demos Track may cover all areas of Semantic Web research and applications, such as Linked Data and Knowledge Graphs, Ontologies, Reasoning, Natural Language Processing and Understanding, Machine and Deep Learning, Large Language Models, Information Retrieval, Data Quality and Data Integration, and Semantic Data Management, as well as related applications from Life Sciences, Social Sciences, eGovernment, Business, Manufacturing, eScience, Emergency and Crisis Management, Cultural Heritage, Tourism, Autonomous Systems, etc. Call for Posters and Demos is available here: https://2024.eswc-conferences.org/call-for-posters-and-demo/ Submission Deadline: March 7th, 2024 Notification of Acceptance: April 4th, 2024 Camera-Ready Paper: April 18th, 2024 All deadlines are 23:59 anywhere on earth (UTC-12). Posters and Demos Chairs María Poveda-Villalón, Universidad Politécnica de Madrid, Spain, mpoveda@fi.upm.es Andrea Nuzzolese, National Research Council, Italy, andrea.nuzzolese@cnr.it -- Kind regards, Tabea and Stefano Web and Publicity team of ESWC 2024 https://2024.eswc-conferences.org/